Endless track band



'Dec. 17, 1929. w. A. TRINLER ET AL ENDLESS 'TRACK BAND Filed Nov. 16, 1926 2 Sheets-Sheet l /nu en fans 7h? 19! Finlay, Newlandflfizhkr Dec. 17, 1929.

w. A. TRINLER ET AL ENDLESS TRACK BAND Filed Nov. 16. 1926 2 Sheets-Sheet 2 WaZZer .4 27 5222615, fVewla ndflfrzhler Patented Dec. 17, 1929 I UNITED STATES WALTER A, TRINLER AND NEWLAND D. TBINLER,'0F CAMAGUEY, CUBA ENDLESS TRACK BAND Application filed November 16, 1926, Serial No. 148,693, and in Cuba August 12, 1926.

This invention refers to endless track bands of a type used on tractors and vehicles used to transport heavy loads, as for example, for the hauling of sugar cane in the field.

The object of the invention is to effect improvements in the construction of the shoes which form the endless track band so that gravel or the like is prevented from lodging between the shoes and interfering with their relative angular movement after they pass around the wheels and so that the stretches of the track band are kept tense and maximum efficiency thereof is secured.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of devices hereinafter described and claimed. In the acompanying drawings Figure 1 is a side elevation of an endless track band constructed in accordance with this invention and mounted on the wheels of a truck.

Figure 2 is a vertical section, taken on the line 22 of Figure 1.

Figure 3 is a partial plan view of the upper reach of the track band.

Figure a is a vertical longitudinal section in detail, according to line 47-42 of Figure 3.

Figure 5 is a side elevation, in detail, of the shoe. I

Figure 6 is a front elevation of the same. Figure 7 is an inner plan view of the same. Referring to Figures 1 and2, guiding and load bearing wheels A and B for each end bight of the belt are mounted on a frame C, on which is mounted the usual shaft D. The endless band is composed of a suitable number of shoes 1 each consisting of a tread plate 1 having a hollow cross sectionally 4o V-shaped ridge 4 on its inner side extending from end to end thereof and having a recess 1 on its inner side. Said tread plates have overlapping ears 2, 3 at their meeting ends, said ears having aligned bores 2', 3' respectively, through which extend pintles 8, so that the tread plates of the shoes are pivotally connected together. Each ridge has an opening 4: in its crown, intermediate its ends and also has elongated side walls extending longitudinally from its pivot, a reduced end 4 extending into the larger end of the next adjacent ridge so that said ridges are in partial overlapping relation. Thesmaller end of each ridge moves in an arc the chord of which is at such an angle to a radius of the pivot of said ridge that its crown is caused to abut against and close in the larger end of the next adjacent ridge when said plates are in alignment so that the ridges of said plates form ooacting stops which keep the stretches of said track band substantially tense. On the outer side of each ridge is a reinforcing rib 6. Lugs 7 are provided to serve as guides in coaction with the wheels A and B.

It will be noted that the small end of the ridge of each shoe is completely covered by the larger end of the ridge of the next adjacent shoe on the lower horizontal lead of the band during all relative movements of the shoes, and that the movement of said smaller ridge end with reference to the larger end of the next adjacent ridge is in an arc the chord of which is at such an angle to a radius of the pivot of such ridge that its crown'is caused to abut against and close in the larger end of the next adjacent ridge when the shoe plates are in alignment and so that said ridges of said plates form coacting stops which keep the stretches of the track band substantially tense.

Hence the smaller end of each ridge is covered and protected by the larger end of the next adjacent ridge during all relative movements of the plates or shoes.

We claim- An endless track band comprising a plurality of shoes, each consisting of a treadv plate having a hollow cross sectionally V shaped ridge on its inner side extending from end to end thereof, said tread plates being pivotally connected together and each ridge having an opening in its crown, intermediate its ends and also having elongated side walls extending longitudinally from its pivot, a reduced end extending into the larger end of the next adjacent ridge so that said ridges are in partial overlapping relation, each to the next and the smaller end of each ridge being constructed and arranged to move in an arc the chord of which is at such an angle to a radius of the pivot of said ridge that its crown is caused to abut against and close in the larger end of the next adjacent ridge when said plates are in alignment and so that said ridges of said plates form eoacting stops which keep the stretches of said track band substantially tense.

In Witness whereof We afiix our signatures.

WALTER A. TRINLER. NEWLAND D. TRINLER. 

